CN104836947A - Image shooting method and apparatus - Google Patents
Image shooting method and apparatus Download PDFInfo
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- CN104836947A CN104836947A CN201510227761.5A CN201510227761A CN104836947A CN 104836947 A CN104836947 A CN 104836947A CN 201510227761 A CN201510227761 A CN 201510227761A CN 104836947 A CN104836947 A CN 104836947A
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Abstract
The invention discloses an image shooting method and apparatus. The method comprises obtaining the shooting duration under a multi-exposure mode; conducting continuous shooting of at least two images in a shooting duration according to a frame rate of shooting equipment after a user inputs a shooting command; and superimpose the at least two images to form the shot image. The image shooting method and apparatus provided by the embodiment of the invention can avoid the over exposure problem of long exposure images conveniently and improve the image quality.
Description
Technical field
The embodiment of the present invention relates to image data processing technique, particularly relates to a kind of image capturing method and device.
Background technology
Along with the development of science and technology, utilizing mobile terminal to take pictures, has been the function that people generally commonly use.
Current mobile terminal, all with long exposure function, but long exposure function has a defect, and namely under normal light luminance, taking the photo come must be overexposure, reduces playability.Use the annex of light damping plate to address this problem, but the cost of product can be improved.
Summary of the invention
The embodiment of the present invention provides a kind of image capturing method and device, to realize improving picture quality, and improves user's use value greatly.
First aspect, embodiments provide a kind of image capturing method, the method comprises:
Under multi-exposure pattern, obtain shooting duration;
After user inputs shooting instruction, according to the frame per second of capture apparatus, in described shooting duration, take at least two images continuously;
Described at least two images are superposed, to form this photographic images.
Second aspect, the embodiment of the present invention additionally provides a kind of image capturing device, and this device comprises:
Shooting duration acquisition module, under multi-exposure pattern, obtains shooting duration;
Shooting instruction input module, for input shooting instruction user after, according to the frame per second of capture apparatus, takes at least two images continuously in described shooting duration;
Described at least two images are superposed by image synthesis unit, to form this photographic images.
Embodiments provide a kind of image capturing method and device, can under the pattern of multiple-exposure, obtain shooting duration, according to the frame per second of capture apparatus, two images are superposed by continuous shooting at least two images, solve in the normal situation of light, also high-quality image can be taken, to improve the use value of user.
Accompanying drawing explanation
Fig. 1 is a kind of image capturing method schematic flow sheet in the embodiment of the present invention one;
Fig. 2 is a kind of image capturing method schematic flow sheet in the embodiment of the present invention two;
Fig. 3 is a kind of image capturing method schematic flow sheet in the embodiment of the present invention three;
Fig. 4 is a kind of image capturing device structural representation in the embodiment of the present invention four;
Fig. 5 is a kind of image capturing device structural representation in the embodiment of the present invention five.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Be understandable that, specific embodiment described herein is only for explaining the present invention, but not limitation of the invention.It also should be noted that, for convenience of description, illustrate only part related to the present invention in accompanying drawing but not entire infrastructure.
Embodiment one
A kind of image capturing method schematic flow sheet that Fig. 1 provides for the embodiment of the present invention one, the method can be performed by the image capturing device configured in mobile terminal, and this device can adopt the form of hardware and/or software to realize.
The method comprises:
S110, under multi-exposure pattern, obtain shooting duration;
The technical scheme of the present embodiment, for terminal is provided with multi-exposure pattern, in this mode, first obtain shooting duration, can be specifically that user inputs and arranges shooting duration, also can be default several shooting duration, being selected by user, also can be the shooting duration that acquiescence is suitable.The time that shooting duration and follow-up shooting process should continue.
S120, after user inputs shooting instruction, according to the frame per second of capture apparatus, continuous shooting at least two images in described shooting duration;
In aforesaid operations, shooting instruction can be specifically that user presses an action command of the shooting push button of mobile terminal when taking.
Frame per second is exactly the frame number of the picture taken in 1 seconds, and frame per second generally can by the performance of picture pick-up device, or the demand of user comes static state setting or dynamic conditioning.Aforesaid operations, after user once inputs shooting instruction, picture pick-up device is continuous multiple images of shooting in the shooting duration of regulation automatically, and concrete shooting quantity is by taking duration and frame per second is determined.User is without the need to repeatedly pressing shutter to input shooting instruction.
S130, described at least two images to be superposed, to form this photographic images.
Multiple images are superposed, thus forms this photographic images, thus achieve and take long exposure image with the technology of multiple-exposure.
The technical scheme of the present embodiment, is particularly applicable to the long exposure image under acquisition ordinary ray, effectively can solves the phenomenon of overexposure.The reason that overexposure can occur long exposure image is because obtain light continuously to carry out imaging in longer shooting time, cause light too abundance cause overexposure.The technical scheme of the present embodiment, in shooting duration, will once take to be decomposed into and repeatedly take, then each shooting acquisition light accumulated time is shorter, and overexposure phenomenon can not occur.Meanwhile, by the imaging importing that multiple are taken continuously, long exposure image can be obtained.The technical scheme of the present embodiment, improves the quality of image, and has enriched the using function of mobile terminal, brings new user to be worth.
Embodiment two
A kind of image capturing method schematic flow sheet that Fig. 2 provides for the embodiment of the present invention.The technical scheme of the present embodiment based on embodiment one, further, acquisition shooting duration before, also comprise: identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern.Namely make terminal can automatic sensing light conditions, switch the screening-mode of long exposure, avoid overexposure.
Further, current light condition will be identified, and current light condition reach impose a condition time, opening described multi-exposure pattern operation optimization is: the automatic photosensitivity obtaining described picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determine that described current light condition reaches to impose a condition, open described multi-exposure pattern.
Based on above-mentioned Optimum Operation, a kind of image capturing method that the present embodiment provides comprises the steps:
S200, identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern;
S201, obtain the automatic photosensitivity of described picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determines that described current light condition reaches and impose a condition, open described multi-exposure pattern;
Automatic photosensitivity, is also called ISO value, is the property parameters of picture pick-up device, is to weigh egative film for the sensitivity level of light, by susceptibility test and measure several numerical value and decide.That reflects the susceptibility of film.Picture pick-up device can select according to light the ISO value that adopts.Automatic photosensitivity is lower, then show that current light is better.The present embodiment make use of this parameter of automatic photosensitivity, when described automatic photosensitivity is lower than setting threshold value, can thinks that current light condition is better, then open described multi-exposure pattern.
S202, under multi-exposure pattern, obtain shooting duration;
S203, after user inputs shooting instruction, according to the frame per second of capture apparatus, continuous shooting at least two images in described shooting duration;
S204, described at least two images to be superposed, to form this photographic images.
The technical scheme of the embodiment of the present invention, by a kind of image capturing method, obtains the automatic photosensitivity of picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determine that current light condition reaches to impose a condition, open multi-exposure pattern, to obtain the image of better effect.
Embodiment three
A kind of image capturing method schematic flow sheet that Fig. 3 provides for the embodiment of the present invention.Described at least two images, based on above-described embodiment, further, superpose, with the photographic images operation optimization forming this are by the technical scheme of the present embodiment: adjustment saturation and the adjustment brightness of often opening image according to formulae discovery; Described adjustment saturation for the corresponding pixel points by described at least two images superposes with adjustment brightness, to form saturation and the brightness of this photographic images corresponding pixel points.
Based on the operation optimized, the method that the present embodiment provides comprises the steps:
S310, under multi-exposure pattern, obtain shooting duration;
S320, after user inputs shooting instruction, according to the frame per second of capture apparatus, continuous shooting at least two images in described shooting duration;
S330, the adjustment saturation of often opening image according to following formulae discovery and adjustment brightness:
Wherein, S
ifor the former saturation of image, L
ifor the former brightness of image, S '
ifor the adjustment saturation of image, L '
ifor the adjustment brightness of image, t is shooting duration, and k is frame per second.
S340, for the corresponding pixel points by described at least two images described adjustment saturation and adjustment brightness superpose, to form saturation and the brightness of this photographic images corresponding pixel points.
In fact aforesaid way by the saturation of each sub-picture and brightness fair play, superposes.Certainly, also can by the pixel intensity of each sub-picture and the heterogeneous linear superposition of brightness, to obtain saturation and the brightness of final long exposure image.
The technical scheme of the embodiment of the present invention, by a kind of image capturing method, by account form, calculates the adjustment saturation of image and the adjustment brightness of image, is carrying out superimposed image, making image effect better.
Embodiment four
Figure 4 shows that the structural representation of a kind of image capturing device that the embodiment of the present invention four provides, as shown in Figure 4, this device specifically comprises: shooting duration acquisition module 410, shooting instruction input module 420 and image synthesis unit 430.
Wherein, shooting duration acquisition module 410, under multi-exposure pattern, obtains shooting duration; Shooting instruction input module 420, for input shooting instruction user after, according to the frame per second of capture apparatus, takes at least two images continuously in described shooting duration; Described at least two images are superposed by image synthesis unit 430, to form this photographic images.
On the basis of such scheme, preferably, also comprise: light identification module 400, for acquisition shooting duration before, identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern.Preferably, light identification module 400, specifically for obtaining the automatic photosensitivity of described picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determines that described current light condition reaches and imposing a condition, opening described multi-exposure pattern.
The technical scheme of the embodiment of the present invention, by a kind of image capturing device, identifies light condition automatically, reach after imposing a condition and open multi-exposure pattern, to obtain the image of better effects if.
Embodiment five
A kind of image capturing device schematic diagram that Fig. 5 provides for the embodiment of the present invention.The technical scheme of the present embodiment, based on embodiment four, further optimizes image capturing device, and this device specifically comprises: shooting duration acquisition module 410, shooting instruction input module 420 and image synthesis unit 430.
Preferably, image synthesis unit 430 comprises: image computing unit 431 and image superimposition unit 432.
Wherein, image computing unit 431, adjustment saturation and the adjustment brightness of image is often opened according to following formulae discovery:
Wherein, S
ifor the former saturation of image, L
ifor the former brightness of image, S '
ifor the adjustment saturation of image, L '
ifor the adjustment brightness of image, t is shooting duration, and k is frame per second; Image superimposition unit 432, the described adjustment saturation for the corresponding pixel points by described at least two images superposes with adjustment brightness, to form saturation and the brightness of this photographic images corresponding pixel points.
The technical scheme of the present embodiment, by a kind of image capturing device, use the mode calculated, the saturation of computed image and brightness, efficiency is high, convenient and swift, and data are accurate, and then improves picture quality.
The said goods can perform the method that any embodiment of the present invention provides, and possesses the corresponding functional module of manner of execution and beneficial effect.
Note, above are only preferred embodiment of the present invention and institute's application technology principle.Skilled person in the art will appreciate that and the invention is not restricted to specific embodiment described here, various obvious change can be carried out for a person skilled in the art, readjust and substitute and can not protection scope of the present invention be departed from.Therefore, although be described in further detail invention has been by above embodiment, the present invention is not limited only to above embodiment, when not departing from the present invention's design, can also comprise other Equivalent embodiments more, and scope of the present invention is determined by appended right.
Claims (8)
1. an image capturing method, is characterized in that, comprising:
Under multi-exposure pattern, obtain shooting duration;
After user inputs shooting instruction, according to the frame per second of capture apparatus, in described shooting duration, take at least two images continuously;
Described at least two images are superposed, to form this photographic images.
2. method according to claim 1, is characterized in that, before acquisition shooting duration, also comprises:
Identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern.
3. method according to claim 2, is characterized in that, identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern and comprise:
Obtain the automatic photosensitivity of described picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determines that described current light condition reaches and impose a condition, open described multi-exposure pattern.
4. method according to claim 1, is characterized in that, is superposed by described at least two images, comprises with the photographic images forming this:
Adjustment saturation and the adjustment brightness of image is often opened according to following formulae discovery:
Wherein, S
ifor the former saturation of image, L
ifor the former brightness of image, S '
ifor the adjustment saturation of image, L '
ifor the adjustment brightness of image, t is shooting duration, and k is frame per second;
The described adjustment saturation of the corresponding pixel points of described at least two images and adjustment brightness are superposed, to form saturation and the brightness of this photographic images corresponding pixel points.
5. an image capturing device, is characterized in that, comprising:
Shooting duration acquisition module, under multi-exposure pattern, obtains shooting duration;
Shooting instruction input module, for input shooting instruction user after, according to the frame per second of capture apparatus, takes at least two images continuously in described shooting duration;
Described at least two images are superposed by image synthesis unit, to form this photographic images.
6. device according to claim 5, is characterized in that, also comprises:
Light identification module, for acquisition shooting duration before, identify current light condition, and current light condition reach impose a condition time, open described multi-exposure pattern.
7. device according to claim 6, is characterized in that, described light identification module specifically for:
Obtain the automatic photosensitivity of described picture pick-up device, when described automatic photosensitivity is lower than setting threshold value, determines that described current light condition reaches and impose a condition, open described multi-exposure pattern.
8. device according to claim 5, is characterized in that, described image synthesis unit comprises:
Image computing unit, adjustment saturation and the adjustment brightness of image is often opened according to following formulae discovery:
Wherein, S
ifor the former saturation of image, L
ifor the former brightness of image, S '
ifor the adjustment saturation of image, L ' i is the adjustment brightness of image, and t is shooting duration, and k is frame per second;
Image superimposition unit, the described adjustment saturation for the corresponding pixel points by described at least two images superposes with adjustment brightness, to form saturation and the brightness of this photographic images corresponding pixel points.
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS Corp.,Ltd. |